The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 30, 1999
Filed:
Aug. 31, 1993
Applicant:
Inventors:
Paul F Michalek, Bloomington, MN (US);
John Kirchberg, Burnsville, MN (US);
John A Rice, Long Lake, MN (US);
Assignee:
North American Philips Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ; G11B / ;
U.S. Cl.
CPC ...
360113 ; 360126 ;
Abstract
A surface smooth enough to allow the formation thereon of a single domain magnetic element is obtained by covering a polished layer with a thin layer of the same material, to smooth sharp edges and corners. The resulting structure is useful in thin film magnetic heads.